Synthesis of a 600-nucleotide-long plus-strand DNA by virions of Moloney murine leukemia virus

S. W. Mitra, S. Goff, Eli Gilboa, D. Baltimore

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

A discrete, 600-nucleotide-long plus-strand DNA has been identified among the products of reverse transcription by virions of Moloney murine leukemia virus. Its polarity was shown by hybridization to minus-strand DNA. It appears to be copied from the right end of minus-strand DNA because (i) its restriction endonuclease cleavage pattern corresponds to the redundant 600-base segment found at either end of the ultimate double-stranded reverse transcription product, (ii) its synthesis is actinomycin D sensitive, and (iii) its synthesis begins during the first hour of a reverse transcription reaction when only the right-hand end of minus-strand DNA is available as template. We therefore call this DNA plus-strong-stop DNA by analogy with the minus-strong-stop DNA copied from the left end of the viral RNA. Both strong-stop DNAs are made early during in vitro reactions and decline in concentration later, consistent with postulated roles as initiators of long minus- and plus-strand DNA. Unlike minus-strong-stop DNA, plus-strong-stop DNA remains as a double stranded nucleic acid after its synthesis, as shown by S1 nuclease resistance. A primer to initiate plus-strong-stop DNA synthesis has not been identified; the product found thus far has no detachable RNA attatched to it.

Original languageEnglish
Pages (from-to)4355-4359
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Volume76
Issue number9
StatePublished - Dec 1 1979
Externally publishedYes

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Moloney murine leukemia virus
Virion
Nucleotides
DNA
Reverse Transcription
DNA Restriction Enzymes
Viral RNA
Dactinomycin
Nucleic Acids
strong-stop DNA
Hand
RNA

ASJC Scopus subject areas

  • General
  • Genetics

Cite this

Synthesis of a 600-nucleotide-long plus-strand DNA by virions of Moloney murine leukemia virus. / Mitra, S. W.; Goff, S.; Gilboa, Eli; Baltimore, D.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 76, No. 9, 01.12.1979, p. 4355-4359.

Research output: Contribution to journalArticle

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